Excretion
Biology · 50 practice questions
Types of excretory structures (contractile vacuole, flame cell, nephridium, Malpighian tubule, kidney, stoma, lenticel); excretory mechanisms — kidneys, lungs, skin; excretory products of plants.
- Define excretion and state its significance.
- Relate the structure of the kidneys to their excretory and osmoregulatory functions.
- Identify the functions and excretory products of the lungs and skin.
- Deduce the economic importance of plant excretory products (e.g. carbon(IV) oxide, oxygen, tannins, resins, gums, mucilage, alkaloids).
Try a few questions
- Practice question 1
The urethra, part of the mammalian excretory system, specifically functions to carry urine from the
- A.liver to the kidney, in a pathway that does not actually exist
- B.kidney to the bladder, a function instead carried out by the ureter
- C.a factor entirely unrelated to carrying urine to the exterior of the body
- D.bladder to the exterior of the body
Show the answer
D. bladder to the exterior of the body
The urethra, part of the mammalian excretory system, specifically functions to carry urine from the bladder to the exterior.
- Practice question 2
Sebaceous glands, found within mammalian skin, specifically secrete an oily substance called
- A.bile, a substance that is instead secreted by the liver
- B.sweat, a substance instead secreted by the sudoriferous glands
- C.sebum
- D.a factor entirely unrelated to the secretion of any oily substance
Show the answer
C. sebum
Sebaceous glands, found within mammalian skin, specifically secrete an oily substance called sebum.
- Practice question 3
Bile pigments, produced by the liver, specifically are considered an excretory product because they result from the breakdown of
- A.undigested food material passed directly from the stomach
- B.old red blood cells
- C.a factor entirely unrelated to the breakdown of old red blood cells
- D.excess carbohydrates stored within the liver's own tissue
Show the answer
B. old red blood cells
Bile pigments, produced by the liver, specifically are an excretory product resulting from the breakdown of old red blood cells.
More UTME Biology topics
- Factors Affecting the Distribution of Organisms
- Internal Structure of Plants and Animals
- Living Organisms
- Theories of Evolution
- Variation in Population
- Evidence of Evolution
- Evolution Among Organisms
- Heredity
- Nutrition
- Symbiotic Interactions of Plants and Animals
- Natural Habitats
- Structural, Functional and Behavioural Adaptations
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